阅读说明：本技术 一种压紧密封阀 (Compressing seal valve ) 是由 彭彬 周茂林 时东常 张安邦 于 2019-10-17 设计创作，主要内容包括：本发明涉及一种压紧密封阀,其主要组成包括：上阀体、下阀体、密封板和压紧机构,所述下阀体上形成有下卸料口；上阀体,所述上阀体设在所述下阀体的上方,所述上阀体对应所述下卸料口的位置形成有上卸料口,所述上卸料口与所述下卸料口之间形成卸料通道,所述密封板位于所述上阀体与所述下阀体之间,所述压紧机构设在所述上阀体与所述下阀体之间且位于所述密封板的下方,在垂直于所述密封板的方向上；本发明减少了密封板对密封件的磨损,有效的消除密封板变形或制造误差对密封效果的影响,提高了密封件的使用寿命和密封效果。在烧结机大烟道、环保高负压干尘装置等排灰系统中有很好的推广使用价值。(The invention relates to a compression seal valve, which mainly comprises the following components: the upper valve body, the lower valve body, the sealing plate and the pressing mechanism, wherein a lower discharging port is formed on the lower valve body; the upper valve body is arranged above the lower valve body, an upper discharge opening is formed in the position, corresponding to the lower discharge opening, of the upper valve body, a discharge channel is formed between the upper discharge opening and the lower discharge opening, the sealing plate is located between the upper valve body and the lower valve body, the pressing mechanism is arranged between the upper valve body and the lower valve body, located below the sealing plate and perpendicular to the sealing plate; the invention reduces the abrasion of the sealing plate to the sealing element, effectively eliminates the influence of the deformation or the manufacturing error of the sealing plate on the sealing effect, and improves the service life and the sealing effect of the sealing element. The method has good popularization and application values in ash discharge systems such as large flues of sintering machines, environment-friendly high negative pressure dry dust devices and the like.)

1. A pinch-seal valve, comprising:

the lower valve body (2), a lower discharging port is formed on the lower valve body (2);

the upper valve body (1) is arranged above the lower valve body (2), an upper discharging opening is formed in the position, corresponding to the lower discharging opening, of the upper valve body (1), and a discharging channel is formed between the upper discharging opening and the lower discharging opening;

a sealing plate (3), the sealing plate (3) being located between the upper valve body (1) and the lower valve body (2) and being slidably connected to the lower valve body (2) between an open position and a closed position, the sealing plate (3) being located between the lower discharge opening and the upper discharge opening and closing the discharge passage when the sealing plate (3) is in the closed position, and being moved to the right and removed from the discharge passage when the sealing plate (3) is in the open position to open the discharge passage;

the pressing mechanism (5) is arranged between the upper valve body (1) and the lower valve body (2) and is located below the sealing plate (3), the pressing mechanism (5) is movably connected between a pressing position and a releasing position on the lower valve body (2), when the pressing mechanism (5) is located at the pressing position, the pressing mechanism (5) extrudes the sealing plate (3) to move upwards to be in sealing butt joint with the bottom of the upper valve body (1), and when the pressing mechanism (5) is located at the releasing position, the pressing effect on the sealing plate (3) is relieved.

2. The pressure sealing valve according to claim 1, characterized in that said pressure mechanism (5) comprises:

the sealing plate structure comprises a first movable beam (10) and a second movable beam (11) which are arranged in parallel, wherein the first movable beam (10) is arranged corresponding to one side edge of the sealing plate (3), the second movable beam (11) is arranged corresponding to the other side edge of the sealing plate (3), the first movable beam (10) and the second movable beam (11) are movably connected to the lower valve body (2) in the direction parallel to the sealing plate (3) and perpendicular to the sealing plate (3), and the left end of the first movable beam (10) is connected with the left end of the second movable beam (11) through a connecting beam (12);

the lower ends of the rocker arms (14) are rotatably connected to the lower valve body (2), and the upper ends of the rocker arms (14) incline rightwards and are rotatably connected to the first movable beam (10) or the second movable beam (11).

3. The pinch-sealed valve according to claim 2, wherein the connecting beam (12) is provided with a linkage boss (16), the linkage boss (16) protrudes upward, and the sealing plate (3) abuts against the linkage boss (16) and moves the first movable beam (10) and the second movable beam (11) leftward when moving from the open position to the closed position.

4. The pressure sealing valve of claim 2, further comprising: tie-beam driving piece (9), tie-beam driving piece (9) are connected tie-beam (12) in between lower valve body (2) and in the drive tie-beam (12) move on the horizontal direction, tie-beam driving piece (9) are formed into along the flexible drive cylinder of horizontal direction or drive actuating cylinder.

5. The pinch seal valve according to claim 2, characterized in that the sealing plate (3) is provided with a sealing plate actuator (4) between the lower valve body (2), the sealing plate actuator (4) being formed as a driving cylinder or driving cylinder that extends and retracts in the horizontal direction.

6. The pinch-seal valve according to claim 2, characterized in that said first mobile beam (10) and said second mobile beam (11) are each provided with a rotatably connected roller (13), the upper surface of said roller (13) protruding from the upper surface of said first mobile beam (10) and from the upper surface of said second mobile beam (11).

7. The pinch-sealed valve according to claim 2, characterized in that the upper valve body (1) is formed with a seal (7) arranged around the upper discharge opening, the lower surface of the seal (7) sealing against the upper surface of the sealing plate (3) when the sealing plate (3) is in the closed position.

8. The pinch-seal valve according to claim 2, characterized in that the front side of the lower valve body (2) is provided with a front connecting plate (17) extending forward, and the rear side of the lower valve body (2) is provided with a rear connecting plate (18) extending rearward;

the position of the upper valve body (1) corresponding to the front connecting plate (17) is provided with a front matching plate which is connected with the front connecting plate (17) through a bolt, and the position of the upper valve body (1) corresponding to the rear connecting plate (18) is provided with a rear matching plate which is connected with the rear connecting plate (18) through a bolt.

9. The pinch-seal valve according to claim 2, characterized in that the bottom of the upper valve body (1) is provided with a dust scraper (8), the dust scraper (8) is arranged vertically to the sealing plate (3), and the lower end of the dust scraper (8) abuts against the upper surface of the sealing plate (3).

Technical Field

The invention relates to the technical field of gold treatment equipment, in particular to a valve structure.

Background

At present, most of dust discharge systems of sintering machine head electric dust removal and bag-type dust remover in high negative pressure state adopt turning plate type double-layer dust discharge valves, and the dust discharge valves in the form have the defects of high air leakage rate, easy abrasion of turning plates (sealing strips) under the scouring action of dust particles, greatly shortened service life of the equipment and influenced production yield or dust removal effect of the equipment. Therefore, the existing sealing valve structure cannot solve the problems of large flue of the sintering machine, electric dust removal of the head of the sintering machine and poor sealing of the dust discharging system of the bag-type dust remover in a high negative pressure state.

Disclosure of Invention

The invention aims to solve the problem that the sealing of a large flue of a sintering machine, a head of the sintering machine, electric dust removal and an ash discharge system of a bag-type dust remover in a high negative pressure state is poor, and provides an automatic compression type sealing valve with a sealing plate and a sealing piece.

The pinch seal valve according to the present invention comprises: the lower valve body is provided with a lower discharging port; the upper valve body is arranged above the lower valve body, an upper discharge opening is formed in the position, corresponding to the lower discharge opening, of the upper valve body, and a discharge channel is formed between the upper discharge opening and the lower discharge opening; a seal plate positioned between the upper valve body and the lower valve body and slidably connected to the lower valve body between an open position and a closed position, the seal plate positioned between the lower discharge opening and the upper discharge opening and closing the discharge passage when the seal plate is in the closed position, and moved to the right and removed from the discharge passage when the seal plate is in the open position to open the discharge passage; the pressing mechanism is arranged between the upper valve body and the lower valve body and is positioned below the sealing plate, the pressing mechanism is movably connected to the lower valve body between a pressing position and a releasing position in the direction perpendicular to the sealing plate, when the pressing mechanism is in the pressing position, the pressing mechanism extrudes the sealing plate to move upwards to be in sealing and abutting connection with the bottom of the upper valve body, and when the pressing mechanism is in the releasing position, the pressing effect on the sealing plate is relieved.

Further, the pressing mechanism includes: the sealing plate comprises a lower valve body, a sealing plate and a first movable beam, wherein the lower valve body is provided with a sealing plate, the sealing plate is provided with a sealing plate opening, the sealing plate opening is arranged at the upper end of the lower valve body, the first movable beam and the second movable beam are arranged in parallel, the first movable beam and the second movable beam are arranged correspondingly to one side edge of the sealing plate, the second movable beam and the other side edge of the sealing plate are arranged correspondingly, the first movable beam and the second movable beam are movably connected to the lower valve body in the direction parallel to the sealing plate and perpendicular to the sealing plate, and the left end; the connecting beam is a form of connection between structural stressed components, is connected with a tie beam between the first movable beam and the second movable beam, and is used for improving the integrity of the two structures of the first movable beam and the second movable beam.

Further, be equipped with a plurality of rocking arms, the lower extreme of rocking arm is rotationally connected on the valve body down, the upper end slope right of rocking arm is rotationally connected first walking beam or the second walking beam, further, the rocking arm receives drive arrangement power left, and the drive rocking arm anticlockwise rotation drives first walking beam or the second walking beam up-and-down motion during the rotation.

Preferably, the connection beam is provided with a linkage boss, the linkage boss protrudes upwards, and the sealing plate abuts against the linkage boss and drives the first movable beam and the second movable beam to move leftwards when moving from the opening position to the closing position.

The driving device transmits a force to the sealing plate, the sealing plate drives the linkage boss, and the linkage boss moves leftwards to drive the first movable beam and the second movable beam to move anticlockwise

Preferably, the pressing mechanism further includes: the connecting beam driving part is connected between the lower valve bodies and drives the connecting beam to move in the horizontal direction, the connecting beam driving part is formed into a driving oil cylinder stretching in the horizontal direction or a driving air cylinder, the sealing plate is arranged between the lower valve bodies and is provided with a sealing plate driving part, and the sealing plate driving part is formed into a driving oil cylinder stretching in the horizontal direction or a driving air cylinder.

The driving member is required to enable the components to operate effectively and economically, has the characteristics of high reliability, high speed and high precision, is easy to maintain, has long service life, and can well drive the connecting beam to move and form the extension of the driving oil cylinder or the driving air cylinder.

Preferably, the first movable beam and the second movable beam are both provided with rollers which are rotatably connected, and the upper surfaces of the rollers protrude out of the upper surfaces of the first movable beam and the second movable beam.

The roller is used as one of machines, has the functions of lubricating, reducing part friction and driving the first movable beam and the second movable beam to rotate.

Preferably, the upper valve body is formed with a seal disposed around the upper discharge opening, a lower surface of the seal sealingly abutting an upper surface of the seal plate when the seal plate is in the closed position.

The seal is a material or part that prevents solid particles from leaking between adjacent bonding surfaces and prevents foreign matter such as dust and moisture from intruding into the components inside the machine equipment, where the seal refutes the cleanliness of the discharge opening.

Preferably, the front side of the lower valve body is provided with a front connecting plate extending forwards, the rear side of the lower valve body is provided with a rear connecting plate extending backwards, a front matching plate connected with the front connecting plate through a bolt is arranged at a position of the upper valve body corresponding to the front connecting plate, and a rear matching plate connected with the rear connecting plate through a bolt is arranged at a position of the upper valve body corresponding to the rear connecting plate of the Susonhu.

Preferably, the bottom of the upper valve body is provided with an ash scraping plate, the ash scraping plate is vertically arranged on the sealing plate, and the lower end of the ash scraping plate is abutted to the upper surface of the sealing plate

The sealing plate has dust or material particles in the long-time operation process, and the dust scraping plate is used for cleaning impurities in the whole operation process and keeping the smooth safety of the production operation process.

The invention has the beneficial effects that:

the sealing effect is better: the sealing plate keeps certain pressure on the sealing element under the action of the pressing mechanism, so that the sealing element generates certain deformation, the defects of the sealing element or the gap between the deformation of the sealing plate and the sealing element can be eliminated, and the sealing effect is better. The problem of the big flue of sintering machine, sintering machine aircraft nose electrostatic precipitator and the row of the dust system of sack cleaner under the high negative pressure state sealed not good is solved.

The friction to the sealing element is reduced, the service life of the sealing element is prolonged, and the sealing plate and the sealing element are in a separated state in the closing and opening movement process, so that the sealing plate is not abraded to the sealing element, and the service life of the sealing element can be greatly prolonged.

Drawings

Fig. 1 is a front view of a pinch seal valve;

fig. 2 is a top view of a pinch seal valve;

fig. 3 is a cross-sectional view of a pinch seal valve in an open state;

fig. 4 is a cross-sectional view of a pinch-seal valve in a closed state;

fig. 5 is a cross-sectional view of a second embodiment of a pinch-seal valve in an open state.

The labels in the figures illustrate: 1-an upper valve body; 2-lower valve body; 3-sealing the plate; 4-sealing plate driving member; 5-a pressing mechanism; 7-a seal; 8-a dust scraping plate; 9-connecting the beam drive; 10-a first walking beam; 11-a second walking beam; 12-a connecting beam; 13-a roller; 14-a rocker arm; 16-linkage boss; 17-a front connection plate; 18-rear connection plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A pinch-sealed valve according to an embodiment of the present invention is described with reference to fig. 1-5.

A pinch seal valve according to one embodiment of the present invention comprises: the lower valve body 2, the upper valve body 1, the sealing plate 3 and the hold-down mechanism 5, a lower discharge opening is formed on the lower valve body 2, the upper valve body 1 is arranged above the lower valve body 2, an upper discharge opening is formed at a position of the upper valve body 1 corresponding to the lower discharge opening, a discharge passage is formed between the upper discharge opening and the lower discharge opening, the sealing plate 3 is positioned between the upper valve body 1 and the lower valve body 2 and is connected to the lower valve body 2 in a sliding manner between an opening position and a closing position, when the sealing plate 3 is positioned at the closing position, the sealing plate 3 is positioned between the lower discharge opening and the upper discharge opening and closes the discharge passage, when the sealing plate 3 is positioned at the opening position, the sealing plate 3 moves rightwards and is removed from the discharge passage to open the discharge passage, and the hold-down mechanism 5 is arranged between the upper valve body 1 and the lower valve body 2 and is.

The pressing mechanism 5 is movably connected to the lower valve body 2 between a pressing position and a releasing position, after the sealing plate 3 seals the discharging channel, when the pressing mechanism 5 is in the pressing position, the pressing mechanism 5 presses the sealing plate 3 to move upwards to be in sealing and abutting connection with the bottom of the upper valve body 1, and when the pressing mechanism 5 is in the releasing position, the pressing effect on the sealing plate 3 is relieved.

The working process of the pressing sealing valve comprises two processes of closing the discharging channel by the sealing plate 3 and pressing the sealing plate 3 by the pressing mechanism 5, the discharging channel is opened or closed by sliding the sealing plate 3 left and right, and the pressing device presses the sealing plate 3 up and down or releases the pressing state of the sealing plate 3.

Through setting up hold-down mechanism 5, can promote the cooperation stability and airtight effect of closing plate 3 and last discharge opening periphery edge, prevent that the material in the passageway of unloading from revealing through the clearance between upper valve body 1 and the closing plate 3, can promote the reliability and the seal of compressing tightly the valve from this. And the sealing plate 3 slides left and right, and the hold-down mechanism 5 moves up and down, so that the structure is simple, the realization is easy, and the production cost is low.

According to one embodiment of the present invention, the pressing mechanism 5 includes: a first movable beam 10, a second movable beam 11 and a plurality of swing arms 14 arranged in parallel.

First walking beam 10 and second walking beam 11 all are located the below of closing plate 3, first walking beam 10 corresponds the setting with a side of closing plate 3, second walking beam 11 corresponds the setting with another side of closing plate 3, first walking beam 10 and second walking beam 11 movably connect under on valve body 2 in the direction that is on a parallel with closing plate 3 and perpendicular to closing plate 3, as shown in the figure, first walking beam 10 can slide along left and right directions, also can slide along upper and lower direction, connect through tie-beam 12 between the left end of first walking beam 10 and the left end of second walking beam 11, tie-beam 12 can drive first walking beam 10 and the activity of second walking beam 11.

Wherein, the lower extreme of rocking arm 14 rotationally connects on lower valve body 2, and the upper end of rocking arm 14 inclines to the right and rotationally connects at first walking beam 10 or second walking beam 11, and partly rocking arm 14 connects between first walking beam 10 and lower valve body 2, and another part rocking arm 14 connects between second walking beam 11 and lower valve body 2, and rocking arm 14 inclines to the right gradually in the direction from the bottom up.

Because the upper end of the rocker arm 14 inclines rightwards, when the rocker arm 14 rotates clockwise with the lower end as the center, the height of the upper end of the rocker arm 14 gradually rises, and further the first movable beam 10 and the second movable beam 11 are driven to move leftwards and move upwards, and the first movable beam 10 and the second movable beam 11 move upwards to extrude the sealing plate 3 to move upwards.

According to an embodiment of the present invention, the connecting beam 12 is provided with a linkage boss 16, the linkage boss 16 protrudes upward, the sealing plate 3 abuts against the linkage boss 16 when moving from the open position to the closed position and drives the first movable beam 10 and the second movable beam 11 to move leftward, and the sealing plate 3 is matched with the linkage boss 16 during sliding, so as to drive the first movable beam 10 and the second movable beam 11 to move and press the sealing plate 3, thereby simplifying the difficulty in pressing the sealing valve.

According to an embodiment of the invention, the pressure sealing valve further comprises: the tie-beam driving piece 9, the tie-beam driving piece 9 is connected between tie-beam 12 and lower valve body 2 and is moving in the horizontal direction in driving tie-beam 12, and tie-beam driving piece 9 forms to the flexible drive cylinder or drive actuating cylinder of horizontal direction of edge. Through setting up tie-beam driving piece 9 and driving tie-beam 12 and remove, and then drive hold-down mechanism 5 and remove left and compress tightly closing plate 3, simplified hold-down mechanism 5's structural design, promoted hold-down mechanism 5's reliability and hold-down mechanism 5 to closing plate 3's effect that compresses tightly.

According to an embodiment of the present invention, the sealing plate 3 is provided with the sealing plate driving member 4 between the lower valve body 2, the sealing plate driving member 4 is formed as a driving oil cylinder or a driving air cylinder which extends and retracts in the horizontal direction, the driving oil cylinder or the driving air cylinder has a simple structure and a large working stroke, and the sealing plate 3 can be driven to move in a large range.

According to one embodiment of the present invention, the first movable beam 10 and the second movable beam 11 are each provided with a roller 13 rotatably connected thereto, an upper surface of the roller 13 protrudes from an upper surface of the first movable beam 10 and an upper surface of the second movable beam 11, a lower surface of the sealing plate 3 is in contact with the roller 13 when the sealing plate 3 is in the closed position, and the sealing plate 3 slides on the roller 13 with less resistance when the sealing plate 3 moves relative to the first movable beam 10 and the second movable beam 11. Because the first movable beam 10 and the second movable beam 11 exert larger compaction acting force on the sealing plate 3, the situation that the compaction sealing valve is pressed to be dead and cannot be opened due to overlarge direct contact friction force of the sealing plate 3 and the first movable beam 10 and the second movable beam 11 can be prevented.

As shown in fig. 3, in the present embodiment, the upper valve body 1 is formed with a seal member 7 provided around the upper discharge opening, and when the sealing plate 3 is located at the closed position, the lower surface of the seal member 7 is sealingly abutted against the upper surface of the sealing plate 3. Through setting up sealing member 7, can further promote the leakproofness between discharge opening and the closing plate 3, prevent that the material from revealing.

According to one embodiment of the invention, the front side of the lower valve body 2 is provided with a front connecting plate 17 extending forwards, and the rear side of the lower valve body 2 is provided with a rear connecting plate 18 extending backwards; go up the position that valve body 1 corresponds preceding connecting plate 17 and is equipped with the preceding cooperation board that passes through bolted connection in preceding connecting plate 17, go up the position that valve body 1 corresponds back connecting plate 18 and locate the back cooperation board that passes through bolted connection in back connecting plate 18, through setting up preceding connecting plate 17 that extends forward, preceding cooperation board and the back connecting plate 18 that extends backward, back cooperation board, not only can link together last valve body 1 with lower valve body 2 reliable and stable, and can prevent that the bolt from influencing the activity route of first walking beam 10 and second walking beam 11, as shown in the figure, bolted connection is between preceding connecting plate 17 and preceding cooperation board or is connected back connecting plate 18, back cooperation board, all set up with first walking beam 10 and second walking beam 11 spaced apart.

As shown in fig. 4, according to an embodiment of the present invention, the bottom of the upper valve body 1 is provided with a dust scraper 8, the dust scraper 8 is vertically disposed on the sealing plate 3, and the lower end of the dust scraper 8 abuts against the upper surface of the sealing plate 3. Through setting up scraping board 8, prevent that closing plate 3 from taking the material on the closing plate 3 out of discharge passage when moving from a left side to the right side.

According to an embodiment of the present invention, the lower end of the rocker arm 14 of the hold-down mechanism 5 is hinged to the sidewall of the lower valve body 2, the upper end of the rocker arm 14 is hinged to the connecting rod, and the connecting rod is hinged to the roller 13, the first movable beam 10 and the second movable beam 11 are fixedly connected together by the connecting beam 12, the sealing member 7 driving member is hinged to the sealing plate 3, the sealing plate 3 is placed on the upper surface of the lower valve body 2, the sealing member 7 is fixed on the upper valve body 1, the upper valve body 1 and the lower valve body 2 are connected together by the bolt, and a certain gap is left between the upper surface of the sealing plate 3 and the lower surface of.

As shown in fig. 3 and 4, according to the pressure seal valve of an embodiment of the present invention, during operation, when the valve is to be closed, the driving device is activated to push the sealing plate 3 to move from the open position to the closed position, when the inner end of the sealing plate 3 contacts the linkage boss 16, the cross beam is driven to move together, the cross beam drives the connecting rod to move together, the connecting rod moves upwards while moving horizontally due to the action of the rocker arm 14, the hinge moves upwards together under the action of the roller 13 on the connecting rod, the sealing plate 3 gradually presses the sealing member 7, the sealing member 7 deforms to a certain extent, and the driving mechanism stops when the pressure reaches a certain value, and the locking state is maintained.

When the valve is to be opened, the sealing driving piece is reversely started to pull the sealing plate 3 to move from the closed position to the open position, when the end part of the inner side of the sealing plate 3 is separated from the linkage boss 16, the connecting rod moves downwards under the action of gravity, the hinge also moves downwards on the roller 13 of the connecting rod, the sealing plate 3 also moves downwards together and is separated from the sealing element 7 gradually, a certain gap is kept between the sealing element 7 and the sealing plate 3, and friction caused by the movement of the sealing plate 3 to the sealing element 7 is avoided.

The dust scraping plate 8 fixed on the upper valve body 1 is an elastic piece and always keeps contact with the upper surface of the sealing plate 3, and dust on the upper surface of the sealing plate 3 can be removed.

As shown in fig. 5, a pressure sealing valve according to another embodiment of the present invention, in operation, comprises: the valve comprises a lower valve body 2, an upper valve body 1, a sealing plate 3, a pressing mechanism 5 and a connecting beam driving piece 9, when a valve is closed, a driving device is started to push the sealing plate 3 to move from an opening position to a closing position, the sealing plate 3 moves between the upper valve body 1 and the lower valve body 2, the connecting beam driving piece 9 drives a cross beam to move together, the cross beam drives a connecting rod to move together, the connecting rod moves upwards while moving horizontally due to the action of a rocker arm 14, the hinge moves upwards under the action of an upper roller 13 of the connecting rod, the sealing plate 3 also moves upwards together and gradually applies pressure to a sealing piece 7, so that the sealing piece 7 generates certain deformation, the driving mechanism stops when the pressure reaches a certain value, and the locking state is kept.

When the valve is to be opened, the connecting beam driving part 9 pushes the connecting rod to move rightwards, the connecting rod and the cross beam drive the rocker arm 14 to swing rightwards, the connecting rod and the roller 13 are driven to move downwards, and the cross beam pair is released

The sealing driving piece is reversely started, the sealing plate 3 is pulled to move from a closed position to an open position, the connecting rod moves downwards under the action of gravity, the hinge also moves downwards on the roller 13 of the connecting rod, the sealing plate 3 moves downwards together and is separated from the sealing piece 7 gradually, a certain gap is kept between the sealing piece 7 and the sealing plate 3, and friction caused by movement of the sealing plate 3 to the sealing piece 7 is avoided.

Other constructions and operations of the pressure-sealed valve according to embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.